Wrench



H. 0,1JOHNSON.

WRENCH.

APPLICATION men APR.-4, 1921.

1,409,863 I Patented Mai: 14, 1922.

, VIII INVENTOR mm ATTORNEY UNITED STATES PATENT OFFICE.

HENRY 0. JOHNSON, 0F VIRGINIA, MINNESOTA.

WRENCH.

Specification of Letters Patent. Patented Mar. 14, 1922.

Application filed. April 4, 1921. Serial No. 458,204.

combinations and arrangements of parts hereinafter described and claimed.

In the drawings, Fig. 1 is a central vertical section part1 in side elevation of my said invention. *ig. 2 is a transverse section of said invention on the line AB, of Fig. 1.

In the drawings, 1 is a fixed jaw and shank, 2 is an adjustable jaw and locking tongue, 3 is a locking cam, 4: is a retracting spring, and 5 is a handle.

It will be observed that said adjustable jaw is mounted upon said shank and is adapted to be reciprocated longitudinally thereof, and that said locking tongue in operative position extends parallel to said shank and is provided upon its opposing face with teeth 2" adapted to engage teeth 1 formed upon or secured to said shank. Said locking cam is mounted on said handle and when said cam lever is drawn down to said handIe said cam is adapted to bear against said tongue and to press it into locking engagement with said shank, in opposition to said spring. The spring 4:, is mounted on,

or secured to either of the members 1 or 2 and is adapted to slide in a shallow groove formed in the other of said members, and is adapted, when said cam is retracted, to retract the teeth of said tongue from engagement with the teeth of said shank to permit the member2 to be reciprocated or adjusted on the member 1.

It is obvious that said construction may be modified or altered in various'particulars within the spirit and scope of my claim. What I claim, is- In a wrench, the combination of a stationary terminal jaw provided with a shank, an adjustable inner jaw provided with a shank adapted to extend approximately parallel to the shank of said station ary aw, said shanks being provided with teeth in their opposing faces adapted in operation to engage each other, one of said shanks having a longitudinally extending groove formed in its toothed face, a spring positioned in said groove and adapted to extend therefrom and bear against the oppo site shank, said spring being adapted to maintain a constant tendency to force said shanks apart to disengage said teeth, andmeans' for forcing said shanks toward each other to engage said. teeth in opposition to said spring.

In testimony whereof, I hereunto affix my 'slgnature in presence of two witnesses.

HENRY O. JOHNSON. 

